I am co-founder of the Lyon-based startup 109Lab (http://109lab.com/). We are behind the OhMyToast (http://ohmytoast.com/) service targeted to helping people make something of their digital memories sleeping on their hard drives.
We use diverse technologies among which lots of open-source such as Camel, Lucene and likely Mahout, Zookeeper, OpenCV.
Making all this work together allows us to really build cool stuff quickly ;)
Keeping a low profile.
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